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weldone-transition-line-domain-knowledge

Skill2 starsChanged 6 months agoApache-2.0View on GitHub

Weldone 项目 TransitionLine 过渡段统一模型的领域知识库。涵盖 PoseRef 位姿引用、TransitionLine 连接线模型、ArmTransitionState 存储结构、FSM 节点消费流程、位姿解析路由、双臂三段式过渡规划等核心概念。适用于分析过渡段规划/查询代码、排查扫描/焊接过渡问题、理解 FSM 中 TransitionPlan 节点逻辑。

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Weldone TransitionLine 过渡段领域知识

1. 核心类型

PoseRef — 位姿引用

三元组 (SegmentId, PoseRole, Tag?),精确定位到某工艺段的某个语义位姿,用作 TransitionLine 的端点和字典 key。

public readonly struct PoseRef
{
    public Guid SegmentId { get; }   // WSG/焊缝的 GUID,全局位姿用 Guid.Empty
    public PoseRole Role { get; }    // 语义角色
    public string? Tag { get; }      // 细分标记(如 "Pass1", "Seg0", "Cap2", "Arm0")
}

PoseRole 枚举

角色含义SegmentIdTag 格式
Home机器人默认 Home 位Guid.Empty无
SafetyPoint安全点WSG ID同 ArcStart
ArcStart焊接起弧点WSG ID"Pass{N}"
ArcEnd焊接收弧点WSG ID"Pass{N}"
ScanStart扫描起点WSG ID"Seg{i}" 或无
ScanEnd扫描终点WSG ID"Seg{i}" 或无
ScanPoint单点重扫目标WSG ID"Cap{N}"
WorkpieceEnd工件结束位(外部轴Home)Guid.Empty"Arm{N}"
EHome中间 Home(过渡用)Guid.Empty"Arm{N}" 或无
CleanGun清枪位Guid.Empty"Arm{N}"
ActualPosition机器人当前实际位置Guid.Empty无

TransitionLine — 连接线

连接两个 PoseRef 的过渡路径,类似图的边。Id 由 (Source, Target) MD5 确定性计算,外部不需要感知 Id。

public class TransitionLine
{
    public Guid Id { get; }                // MD5(Source + Target) 确定性计算
    public PoseRef Source { get; }         // 起点
    public PoseRef Target { get; }         // 终点
    public Process? Process { get; set; }       // 规划出的机器人运动路径
    public Process? ApproachProcess { get; set; } // 进近路径
    public bool? Validation { get; set; }       // 是否有效
}

2. 存储结构

ScanWeldWorkflowData
├── ArmTransStateDict: Dict<int, ArmTransitionState>  // 每条臂一个
│   ├── [0] ArmTransitionState (左臂)
│   │   ├── CurrentPoseRef      // 当前位姿引用
│   │   ├── TargetPoseRef       // 目标位姿引用(FSM上游节点设置)
│   │   ├── ActualPoses         // Dict<PoseRef, JointPose> 实际位姿缓存
│   │   └── PlannedTransitions  // List<TransitionLine> 已规划的过渡段
│   └── [1] ArmTransitionState (右臂)
│       └── ...
├── AllTransitionLines           // 扁平视图:SelectMany(PlannedTransitions)
├── ScanCaches[unitId]           // 扫描缓存(含 Process)
├── WeldCaches[segmentId]        // 焊接缓存(含 MultiPlanCacheItems)
└── AddTransitionLine(armIdx, line)  // 按臂号归档

ArmTransitionState 关键方法

方法作用
SetCurrent(poseRef, jointPose)设置当前位置并缓存到 ActualPoses
SetTarget(target)设置目标位姿(FSM 上游写入,TransitionPlan 消费)
SetTargetPinned()将目标锁定为当前位置(用于无目标场景)
SaveTarget() / RestoreTarget()保存/恢复目标(清枪等临时中断场景)

3. FSM 流程

扫描过渡

ForeachScanWeldExecute
    └── SetTarget(new PoseRef(wsgId, ScanStart))   // 设置扫描目标
            ↓
    ScanTransPlan (TransitionPlan 节点)
        ├── 清空 arm.PlannedTransitions
        ├── source = arm.CurrentPoseRef(或 Home)
        ├── PlanForArmAsync(source, target)
        │   ├── 先查缓存: TryGetLine(data, source, target)
        │   └── 未命中 → PlanTransitionAsync(实时规划)
        └── 补充 finish line: ScanEnd → EHome
            ↓
    ScanExecuteRouter → 扫描执行

焊接过渡

ForeachWeldMultiPass
    └── SetTarget(new PoseRef(wsgId, ArcStart, "Pass1"))   // 设置焊接目标
            ↓
    WeldTransPlan (TransitionPlan 节点)
        ├── 同上逻辑
        └── 补充 finish line: ArcEnd → EHome
            ↓
    WeldExecute → 焊接执行

清枪过渡

CheckIfCleanGun
    └── SetTarget(PoseRef.CleanGun(armIdx))   // 目标改为清枪位
            ↓
    CGPrepare4W / CGPrepare4S (TransitionPlan)
            ↓
    CGTrans4W / CGTrans4S (TransitionExecute)
            ↓
    CleanGunExecute → 清枪完成 → RestoreTarget() → 恢复原目标

过渡段在 FSM 中的所有节点

FSM 节点Type场景
ScanTransPlanTransitionPlan扫描前过渡(到 ScanStart)
SingleScanTransPlanTransitionPlan单点扫描前过渡
WeldTransPlanTransitionPlan焊接前过渡(到 ArcStart)
CGPrepare4WTransitionPlan清枪前过渡(焊接场景)
CGPrepare4STransitionPlan清枪前过渡(扫描场景)
TransitionExecuteTransitionExecute执行已规划的过渡段
CGTrans4W / CGTrans4STransitionExecute清枪过渡执行

4. 查询 API(PlanManager.TransitionLine.cs)

方法用途
TryGetLine(data, source, target)按源/目标精确查一条(MD5 Id 匹配)
GetOutgoingLines(data, source)某位姿出发的所有过渡
GetIncomingLines(data, target)到达某位姿的所有过渡
GetLinesBySegment(data, segmentId)与某 WSG 相关的所有过渡
GetAllLines(data)全部过渡段
CollectSegmentTransitions(data, wsgId)收集某 WSG 的段间扫描过渡(Seg{i} Tag,按序排列)

5. 位姿解析路由(TryResolvePose)

PoseRef → JointPoseDto 的解析链:

TryResolvePose(data, poseRef)
│
├── 1. ActualPoses 缓存命中 → 直接返回
│
├── 2. WorkpieceEnd / EHome / CleanGun
│       → TryResolveGlobalPose → GetHomePose(armIndex) → 缓存到 ActualPoses
│
├── 3. Home → GetHomePose(0, [0,0,0])
│
├── 4. ScanStart / ScanEnd / ScanPoint
│       → TryResolveScanPose
│       ├── Tag="Seg{i}" → 段内位姿(ParseProcess 取第 i 段的 ArmPlanData 首/末点)
│       ├── Tag="Cap{N}" → 拍照位姿(所有段的 ArmPlanData 按序展平取第 N 个)
│       └── 无 Tag → CreateVisionPlanJoint 取整体首/末
│
└── 5. ArcStart / ArcEnd / SafetyPoint
        → TryResolveWeldPose
        ├── 从 Tag 解析 passIndex("Pass{N}" 或纯数字)
        ├── WeldCaches[segmentId].MultiPlanCacheItems 匹配 passIndex
        └── CreateWeldPlanJoint 取首/末

6. 双臂过渡规划(PlanDualArmTransitionCore)

三段式安全过渡路径:

start → EHome(current externals) → EHome(target externals) → target
  P1              P2                        P3
  • P1: start → EHome(当前外部轴位置)
  • P2: EHome(当前外部轴)→ EHome(目标外部轴)— 仅外部轴不同时执行
  • P3: EHome(目标外部轴)→ target

跳过优化:

  • start 已在 EHome 且外部轴相同 → 跳过 P1
  • 两步 EHome 的关节+外部轴完全一致 → 跳过 P2
  • 外部轴不同时 viaEHome 强制为 true

单臂/简化过渡:WorkpieceEnd/EHome/CleanGun 始终使用单臂 SolveP2PProcesses。

7. 扫描段间过渡(PlanScanSegmentTransitionsAsync)

多段推扫的段间过渡规划:

ScanEnd[Seg0] → ScanStart[Seg1]    // 段 0→1 过渡
ScanEnd[Seg1] → ScanStart[Seg2]    // 段 1→2 过渡
...
  • 遍历相邻段,用 SolveP2PAsync 规划关节空间过渡路径
  • 结果存入 AllTransitionLines,逐段容错(失败跳过,后处理 fallback 到 GroupMoveL)
  • Tag 格式:"Seg{i}" 标识段内位姿

8. 关键文件索引

文件作用
src/Weldone.Domain/Cache/TransitionLineTypes.csPoseRef / TransitionLine / PoseRole 定义
src/Weldone.Domain/Cache/ArmTransitionState.cs单臂过渡状态(CurrentPoseRef、PlannedTransitions)
src/Weldone.Application/Plan/PlanManager.TransitionLine.cs查询、规划、存储的核心实现
src/Weldone.Application.Contracts/Workflows/ScanWeldWorkflowData.csAllTransitionLines / AddTransitionLine
src/Weldone.Application/States/ModelBase/TransitionPlan.csFSM 统一 TransitionPlan 节点
src/Weldone.Application/States/ModelBase/5.TransitionExecute.cs过渡段执行节点
src/Weldone.Application/States/ModelBase/2.ForeachScanWeldExecute.cs设置 ScanStart 目标
src/Weldone.Application/States/ModelBase/7.ForeachWeldMultiPass.cs设置 ArcStart 目标
src/Weldone.Application/States/ModelBase/10.1CheckIfCleanGun.cs清枪目标切换
src/Weldone.Application/StateEngines/ModelBase/ModelBaseFSM.FSMScriptFSM 图定义
src/Weldone.Domain/Cache/PoseRefJsonConverter.csPoseRef JSON 序列化

9. 风险与注意事项

风险说明
PoseRef 相等性结构体值比较,依赖 SegmentId + Role + Tag 三元组全等
TransitionLine Id 碰撞MD5 计算理论上极低概率碰撞,实际可忽略
缓存一致性ActualPoses 缓存了 GetHomePose 结果,若 Home 位在运行中变化需注意
双臂外部轴外部轴不同时强制走 EHome,直接跳过 P2 会导致路径错误
段间过渡容错PlanScanSegmentTransitionsAsync 失败段会被跳过,后续后处理 fallback 到 GroupMoveL

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